This project is only guaranteed to build with the very latest commit on the Swift and swift-corelibs-foundation master branches. You may update to the latest commits using the Swift utils/update-checkout script:

$ ../swift/utils/update-checkout

Using Xcode

To browse files in this project using Xcode, use XCTest.xcworkspace. You may build the project using the “SwiftXCTest” scheme. Run the “SwiftXCTestFunctionalTests” scheme to run the tests.

Keep in mind that the build script invocation in “Contributing to XCTest” above will always work, regardless of which Swift toolchains you have installed. The Xcode workspace exists simply for the convenience of contributors. It is not necessary to successfully build this project in Xcode in order to contribute.